Sewing-machine.



L. ONDERDONK.

SEWING MACHINE.

APPLICATION FILED DEO. 6, 1907.

Patented Mar. 23, 1915.

5 SHEETS'fiHBET 1.

L. ONDERDONK.

SEWING MACHINE.

APPLICATION FILED DEG. 6. 1907. 1,1 32,963. Patented Mar. 23, 1915.

6 BHBETS-BHEET 2.

W1 YYVESSES INVENTOR y MW . HIM/113w L. ONDERDONK.

SEWING MACHINE.

APPLIUATION FILED DEC. 6, 1907. 7 1,1 32,963, Patented Mar. 23, 1915.

6 SHEETS-SHEET 4.

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M 11 W W w L. ONDERDONK.

SEWING MACHINE.

APPLICATION I'ILED DEC. 6, 1907.

1,1 32,963. Patented Mar. 23, 1915.

6 SHEETS-SHEET 5.

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LANSING ONDERDONK, OF NEW YORK, N. Y., ASSIGNOR TO UNION SPECIAL MACHINECOMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SEWING-MACHINE.

Specification of Letters Patent. Patented ltIar, 23, 1915,

Application filed December 6, 1907. Serial No. 465,854.

5 State of New York, have invented certain new and useful Improvementsin Sewing- Machines, of which the following is a description, referencebeing had to the accompanying drawing and to the letters and figures ofreference marked thereon.

My invention relates to new and useful improvements in sewing machines,and more especially to sewing machines which are adapted for making ablind stitch.

An object of my invention is to provide a blind stitch sewing machine,wherein the parts shall be compactly arranged and positive in theirmovements.

A further object of my invention is to provide a blind stitchoverseaming mechanism, wherein a thread carrying looper operates withthe needle at one side of the line of the seam, and a spreader operatesto carry the looper thread loop across the line of feed and position thesame for the entrance of the needle.

A further object of my invention resides in a common looper and spreaderoperating mechanism, irrespective of whether said mechanism is embodiedin a blind stitch machine, or other form of overseaming machines.

Still further ob ects of my inventlon Will be in part obvious, and willbe in part here- P inafter, more fully pointed out.

In the drawings which show by way of illustration one embodiment of myinvention only :Figure 1 is a side elevation of a machineembodying myinvention, parts being :0 in section. Fig. 2 is a rear elevation withthe parts shown in section. Fig. 3 is an end view with the front plateremoved. Fig. 4 is a sectional view taken on the line 44 of Fig. 1,certain parts being omitted for the I Fig. 5 is a detail view showingthe position of the needle, looper and spreader when the looper is atthe end of its stroke. Fig. 6 is a similar view with the looper at therear end of its stroke. Fig.

9 7 is a detail partly in section, showing the needle, looper, spreader,work supporting ridge and presser feet, with the spreader engaging anddeflecting the needle. Fig. 8 is a detail view showing in end elevationa'modi- 5 fied form of needle operating mechanism.

Fig. 9 is a view in side elevation of the same.-

A standard 1, carries a work supporting arm 2, which as shown in thepresent embodiment of my invention, is pivotally supported at 3, so thatthe said work support 2 s capable of a limited vertical movement at itsouter end, as shown in dotted lines-in Flg. 2. Said work supporting arm2, has a depending flange or lug 4, which is pivoted to a link 5. A link6 is in turn pivoted to the link 5 at one end and at its other end, ispivotally connected to a pin or short shaft 7, whlch is mounted in abearing 8 carried by the standard 1. The outer'end of the pin or shaft7, has rigidly secured thereto, an arm 9, by means of which the shaft 7may be oscillated. As the shaft 7 is oscillated, the arm or link 6 isturned toward or from a horizontal position and the links 5 and 6operate as toggle links, to lift the work support ng. arm into properposition for supporting the work while being operated upon.

The link 5 is provided with a lug 10, WhlCl'l engages the arm or link 6at the time when the plvotal connection between said links is slightlyabove the line connecting the axis of the shaft 7 and the pivotalconnectlon between the link 5 and the flange 4. When the parts are inthis position, it will be seen that the work support is securely held inits raised position. By adiusting the bearing back and forth on the bedplate, the extreme upper position of the work support mav be varied.

.The needle 11 is secured to a needle lever 12, by means of a suitableclamping screw 13. The needle lever 12 is pivoted at 14 to a bearingstud carried by the overhanging arm 15 of the machine. The needle leverextends beyond its pivotal support and carries a ball stud 16 to whichis pivoted a link 17. The opposite end of the link 17, is plvoted at 18,to one arm of a rock lever 19, which in turn is pivoted at 20 to aprojecting lug 21,- carried by the standard. The other end of the rocklever 19 carries a ball stud 22, which is pivotally connected to one endof an eccentric pitman 23, cooperating with an eccentric 24, carried bythe main shaft 25. The main shaft 25, is mounted in suitable bearingsand runs lengthwise through the overhanging arm. Said shaft receives itsrotation from a suitable belt wheel 26. At its forward end, the shaft isprovided with a beveled gear 27., which meshes with the beveled gear 28,carried by a vertical shaft 29, mounted 1n suitable bearings in theforward end of the overhanging arm. The

main bearing for the shaft 29 is formed by v a collar 30, which issecured to the frame of formed in a lug 37, secured to the overhangingarm. The upper end of the looper sup port 35, carries a crank arm 38having a ball stud 39 to which is pivoted a link 40. The opposite end ofthe link 40 is pivoted to a collar 41 by means of a pivot bolt 42. Thecollar 41 is provided with outwardly extending ears, between which thelink 40 is pivoted. The collar 41 is loosely connected to the crank pin33, by any suitable means.

The supporting bearing 36, for the looper support, is arranged at anincline to the vertical, and the axis of the looper is locatedsubstantially in the plane of movement of the needle, so that the looperpoint moves from a position in the rear of the needle, slightly downwardinto the needle loop, and then slightly upward so that the looper threadis properly positioned for the engagement therewith by the spreader.

The spreader 43 is carried by a spreader support 44 which is mounted ina bearing 45 formed in a lug 46, carried by the head of the machine. Theupper end of the spreader support 44 is provided with a crank arm 45,which carries at its outer end a ball stud 46'. A link 47 is pivoted tothe ball stud at one end, and is pivoted at its other end, betweenextending ears 48 carried by the collar 49, loosely secured to the crankpin 33. The bearing for the spreader support, is inclined to thevertical, and also slightly inclined to a plane passing at right anglesto the plane of movement of the needle, so that the spreader in itsmovement will pass over the looper and cross over the seam to a positionunderneath the needle.

In the forward end of the work supporting arm 2, is an intermittentlyrotating feed wheel 50, having a crimping ridge 51 and fabric engagingteeth 52, 53, located on opposite-sides of said crimping member.Cooperating with the feed wheel and crimping member, are two pressermembers or feet 54 and 55. These members 54 and 55, are carried by arms56 and 57 which are pivoted on an axis coincident with the axis of theneedle lever. The springs 58 and 59 engage at one end the arms 56 and 57respectively, and are secured at their upper ends, to the head of themachine. Suitable adjusting bolts 60 and 61. engage the springs 58 and59 respectively, and serve to'hold the presser feet in position upon thematerial. Said presser feet are separated by a suitable hand lever 62which carries a cam engaging between the arms 56 and 57. The presserfoot 54 is provided with a needle guiding'groove, into which the needlepasses in its forward movement and which serves to hold the needle frombeing deflected laterally.

The presser foot structure herein described, forms no part of thepresent invention but is shown, described and claimed in my co-pendingapplication, Serial No. 405,356, filed on even date herewith.

I have provided my machine with a suitable finger 62 which is locateddirectly above the work-crimping member 51, and extends across the planeof movement of the needle,

so that the stitch may be formed thereover, and as the work is fed alongby the feeding member, the stitches are carried off from the stitchfinger. Said stitch finger is supported by a bracket 63, secured to thelug 37 which supports the looper. The bracket 63 is provided with spacedears which carry bearings for a shaft 64 to the outer end of which isadjustably secured the stitch finger by means of a slot 65, and screw66. Said shaft 64 also carries an edge guide 67. The spring 68 engagesthe bracket 63, and the shaft 64 and normally holds the stitch finger incontact with the material being stitched.

The looper thread as it passes from the supply, is led through a guideeye 69, and thence to the looper eye 70, in the heel of the looper andfollows the thread groove in the looper to the eye 71. It will be notedthat as the looper starts on its backward movement from the positionshown in Fig. 5, the looper thread will at first be entirely slack forthe reason that the eye of the looper in its first movement backward,moves toward the previously formed stitch slightly, and further the eyeat the heel of the looper moves toward the thread eye 69. This slackgiving movement of the looper allows the spreader to carry the looperthread across the line of the seam and into position to be entered bythe needle.

I have provided the front end of the overhanging arm with a face plate 72, which is pivotally connected to the head of the machine by a screw'73. Said face plate at its lower end has an outwardly projectingportion 74, which covers the looper operating link. The face plate 72,is held in closed position by a spring latch 75.

The operation of my device is as follows: The work suport is lowered bymeans of the hand lever 9, and the presser feet are separated by meansof the hand lever 62.

work support and if it is desired to stitch an edge to a body fabric,and overseam the seam, said edge is guided by the edge guide 67 Thepresser feet are brought together on the work and the work support islifted 3 to its normal position, the toggle links holding the same insaid lifted position. As the needle moves forward, the same entersthelooper thread loop, held by the spreader at this time, as shown in ings.The needle in its continued forward movement, enters the guiding groovein the presser foot 54, and passes through the fabric which is crimpedby the crimping 'face of the fabric as it entered. The work support maybe adjusted so that the stitches will be entirely'e'mbedded in thefabric and concealed on the right side of the material or if desired,said work support, may be so adjusted that the stitches will slightlygrin on the right side of the material.

. The needle enters the workclamped by the work support, and extendingup between the presser members and passes underneath the stitch finger62. As soon as the needle enters the loop carried by the spreader, thespreader is retracted and as the needle reaches the forward end of itsstroke, the spreader is also reaching the backward end .of its stroke,and the bowed portion of the spreader engages the needle, see Fig. 7,

slightly deflecting the point and holding said needle so that as thelooper moves for ward into the needle loop, there is no possibility ofthe looper striking the needle. bowed portion of the spreader therefore,engaging the needle, serves as a needle deflector or guard, to properlyposition the needle for the entrance of the looper. The looper now movesforward into the needle loop, which is thrown out as the needle beginsits backward movement and said looper moves into .a position so that thespreader as it moves forward, will engage the looper thread between theeye of the looper and the material and carry said looper thread over theline of the seam into a position for the entrance of the needle. As thelooper is retracted, after the spreader engages the looper thread, slackis given up so that the looper thread loop may be carried into positionfor the engagement of the needle, but as soon as the needle has engagedthe looper thread loop, and the spreader is retracted from the looperthread loop, the eye at the heel of the looper moves beyond the threadguide 69, and begins to take up the slack in the looper thread, thusproperly drawing the'loops of the looper thread taut, so as to set thestitch. The presser feet or members are yieldingly mounted, while thework support is ractically rigid when in normal position or holding thework and therefore, v after the parts are once ad uste d, the needle 5will pass .through the same distance from Fig. 6 of the draw-,-

member 51 and emerges from the same su-r The left of the line of feed,as viewed in Fig. 1,

and the spreader support in rear of the path of the needle, as viewed insaid figure, I am enabled to operate both the spreader and the looperfrom a common crank pin, and at the same time secure the proper timingof these,

parts so that they will coiiperate with each other and the needle, toform the stitch.

In Figs. 8 and 9, I have shown a modified form of needle operatingmechanism. The needle lever 12 has an arm 75 carrying a ball stud 76,which is engaged by a link 77.,

pivoted in turn to a rock lever 78, fulcrumed to a bracket 79 carried bythe head of the (machine. The opposite end of the rock le' Ver 78 isengaged by a link 80, which is operated from the main shaft 25 in anysuitable manner. In this form of needle operating mechanism, it will beseen that the entire space underneath the overhanging arm is free fromobstruction.

Having thus particularly described my invention, what I claim as new anddesire to secure by Letters Patent is:

1. The combination of a needle, alooper and a spreader, means foroperating said needle, and means for operating said looper and spreaderincluding a rotating shaft, a crank pin located on said shaft, devicesfor connecting the crank pin to the loop-er, and independent devices forconnecting the crank pin to the spreader.

2. The combination with a work support and an overhanging arm, of aneedle, a looper and a spreader, mounted on said overhanging arm, meansfor operating said needle and means for operating said looper andspreader, a crank pin, common spreader.

3. The combination of a work support, an overhanging arm, a needle, alooper, and a spreader mounted on said: overhanging arm, means foroperating said looper and spreader including a vertical shaft, devicesfor connecting the vertical shaft to the to both the looper andincluding a rotating shaft and looper for oscillating the same, andinde-' needle, and means for operating said looper.

and spreader, including a vertical shaft. a crank pin carried thereby,and deviceseone necting said crank pin with said spreader, and with saidlooper.

5. The combination of a needle, a looper and a spreader, means foroperating said needle and means for operating said looper and spreader,including a horizontal shaft, a vertical shaft geared thereto, a crankdisk carried thereby, and a crank pin mounted on the crank disk andconnected to said looper and to said spreader.

6. The combination with a work support, an overhanging arm, a needlehead carried thereby, a main shaft mounted in the overhanging arm, avertical shaft mounted in said needle head, and connected to said mainshaft, a needle, means. for operating said needle, a looper and aspreader, and means carried by said vertical shaft, for operating saidlooper and spreader.

7. The combination With a Work support, of an overhanging arm, a needlehead carried thereby, a main shaft mounted in the overhanging arm, avertical shaft mounted in said needle head and connected to said mainshaft, a needle, means for operating said needle, a looper and aspreader, means carried by said vertical shaft for operating said looperand spreader, said Work support being provided with a crimping memberand means cooperating therewith to hold the fabric.

8. The combination with a Work support, of an overhanging arm, a mainshaft mounted therein, a needle head carried at the forward end of saidoverhanging arm, a needle lever pivoted on said needle head, means foroperating said needle lever from said main shaft, including a rock shaftcarried by the arm of the machine, a looper and a spreader carried bythe overhanging arm, means for oscillating said looper, and means foroscillating said spreader.

9. The combination with a work support of an overhanging-arm, a mainshaft mounted therein, a needle head carried at the forward end of saidoverhanging arm, a needle lever pivoted on said needle head, means foroperating said needle lever from said main shaft including a rock shaftcarried by the arm of the machine, a looper and a spreader carried bythe overhanging arm, a vertical shaft geared to said main shaft, anddevices connected to said vertical shaft for operating said looper andspreader.

10. The combination with a Work support, of an overhanging arm, a mainshaft mounted therein, a needle head carried at the forward end of saidoverhanging arm, a needle lever pivoted on said needle head, means foroperating said needle lever from said main shaft, including a rock shaftcarried by the arm of the machine, a looper and a spreader carried bythe overhanging arm, a vertical shaft geared to said main shaft anddevices connected to said vertical shaft for operating said looper andspreader, said work sup port being provided With ,a crimping member, andmeans for holding the fabric on said crimping member.

11. The combination With a work support of an overhanging arm, a mainshaft mounted therein, a needle head carried at the forward end of saidoverhanging arm, a needle lever pivoted on said needle head, means foroperating said needle lever from said main shaft, including a rock shaftcarried by the arm of the machine, a looper, a vertical shaft geared tosaid main shaft, devices connected to said vertical shaft for operatingsaid looper and spreader, said Work support being provided with acrimping member, means for holding the fabric on said crimping member.

12. The combination with a Work support, of an overhanging arm, aneedle, means for operating said needle, a looper mounted on an axisinclined at an acute angle to the vertical and lying substantially in avertical plane intersecting the line of the seam at right angles, aspreader mounted on an axis inclined to the vertical, and in a planesubstantially at right angles to the first named plane, and means foroperating said looper and spreader.

13. The combination with a Work support, ofan overhanging arm, a needle,means for operating said needle, a looper mounted on an axis inclined tothe vertical and lying substantially in a vertical plane passing throughthe line of the seam, a spreader mounted on an axis inclined to thevertical and in a plane substantially at right angles to the first namedplane, a main shaft mounted in the overhanging arm, a vertical shaftgeared thereto, and devices connected to said vertical shaft foroperating said looper and spreader.

14:. The combination with a work support of an overhanging arm, aneedle, means for operating said needle, a looper mounted on an axisinclined to the vertical and lying substantially in a vertical planepassing through the line of the seam, a spreader mounted on an axisinclined to the vertical and in a plane substantially at right angles tothe first named plane, a main shaft in the overhanging arm, a verticalshaft geared thereto, a crank disk carried at the lower end thereof, acrank pin mounted on said crank disk, and devices for connecting saidcrank pin to said looper and spreader.

15. The combination With a Work support of an overhanging arm, a needle,means for operating said needle, a looper mounted on an axis inclined tothe vertical and lying substantially in a vertical plane passing throughthe line of the seam, a spreader mounted on an axis inclined to thevertical and in a plane substantially at right angles to the first namedplane, means for operating said' looper and; spreader, said work supportbeing provided with a crimping member, and means for holding the workupon said crimping member.

16. The combination with a Work support, of an overhanging arm, a curvedneedle, means for operating said needle, a looper mounted on an axisinclined to the vertical and lying substantially in a vertical planepassing through the line of the seam, a spreader mounted on an axisinclined to the vertical and in a plane substantially at right angles tothe first named plane, said work support being provided with a crimpingmember, and means for gelding the work upon said crimping mem- 17. Thecombination with a vwork support, an overhanging arm, a needle, meansfor operating said needle, a looper mounted on an axis inclined to thevertical and lying substantially in a vertical plane passing through theline of the seam, a spreader mounted on an axis inclined to thevertical, and in a plane substantially at right angles to the firstnamed plane, a main shaft in the overhanging arm, a vertical shaftgeared thereto, a crank disk carried at the lower end thereof, a crankpin mounted on said crank d'sk, and devices for connecting said crankpin to said looper and spreader, said Work support being provided with acrimping member, and means for holding the Work upon said crimpingmember.

18. A stitch forming mechanism including a needle, a spreader, and alooper, means for operating said needle, means for operating said looperand means for operating said spreader, said'spreader being soconstructed and arranged as to engage said needle, and hold the same inproper position for the looper to pass the needle and enter the needleloop.

19. A stitch forming mechanism, including in combination a curvedneedle, means for operating the same, a thread carrying looper and aspreader, said spreader inits movements engaging said needle and holdingthe same in position, so that the thread carrying looper may enter theneedle loop, without striking the needle.

20. The combination of a work support, a crimping member, carriedthereby, a curved needle moving substantially in a horizontal plane atthe stitching point, a thread carrying looper coiperating with saidneedle, a spreader cooperating with the thread carrying looper andneedle, said spreader in its backward movement engaging the needle andholding the same out of the path of the thread carrying looper.

21. The combination of a work support, an overhanging arm, a needlelever mounted on the overhanging arm, a curved needle carried thereby, athread-carrying looper mounted on the overhanging arm and a spreadermounted on said overhanging arm, said spreader being soconstructed andarranged as to engage said needle and hold the same out of the path ofthe thread carrying looper.

22. The combination of a work support, an overhanging arm, a needlelever mounted on the overhanging arm, a curved needle carried thereby, athread carrying looper mounted on the overhanging arm, and a spreadermounted on said overhanging arm said spreader being so constructed andarranged as to engage said needle and hold the same out of the path ofthe thread car-' rying looper, said work support, being provided with acrimping member and means for holding the Work upon said crimpingmember.

23. The combination with a work support of a crimping member, carriedthereby, a curved needle, means for operating the same,

a looper cooperat ng with said needle at one side of the line of theseam. a spreader for engaging the looper thread loop and carrying thesame across the line of seam, and into position for the needle to enterthe same.

24. The combination of a wo k support. a crimping member carriedtherebv,a curved needle. a looper moving in a curved path alrove thepath of the needle. and engaging the needle loop, a spreader mo ing in acurved path above the path of the loo er. across the seam. and below thepa h of the needle. whereby the looper th ead loo is carried ac oss saideam in posit on for the ent ance of the needle.

25. The combination with a Work support of a crim ing mem er carried theebv. a curved needle. means for o e 'at nq the me a loo er cotiperat ngth sa d need e at one side oi the l ne of the seam. a sp e der forengaging the loo e thread loop and ea rving the same ac oss t e l ne ofse m d into posit on fo the need e to P te the same. and a s itch fin eover which the loo er thread loops are. la d.

26. The com ination of a wo k su port. a crimping member carriertherebv. a curved needle. a loo er moving in a curved path above thepath of the need e. and engag ng the needle loop. a. spreader mo ing ina curved path abo e the path of the looper, across the l ne of seam. andbelow the path of the needle. wherebv the loo er th ead loop is carriedacross said seam in posit on for the entrance oi the need e. and astitch finger over which the looper thread loops are 27. The com inationof a work support, a crimping member, a needle. means for operating thesame, a looper and a spreader, said sp eader, operating to carrv thelooper th ead loop across the l ne of the seam. and a thread guidecotiperating with said looper,

whereby the backward movements of the looper draws the looper threadtight and aids in setting the stitch.

28. The combination with a work support, of a crimping member, means forholding the work on said crimping member, a curved needle, a threadcarrying looper cooperating with said needle, a spreader for engagingthe looper thread loop, and carrying the same across the line of seaminto position for the entrance of the needle into the looper threadloop, and a thread guide cooperating with said thread carrying looper,whereby the looper in its backward movement draws up the looper threadloop, and aids in setting the stitch.

29. The combination with a work support, of an overhanging arm, a needlehead carried thereby, a main shaft mounted in the overhanging arm, avertical shaft mounted in said needle head and connected to said mainshaft, a needle a pivoted needle lever carrying said needle, means foroperating said needle lever, a looper and a spreader, means carried bysaid vertical shaft for operating said looper and spreader, said worksupport being provided with a crimping member and means cooperatingtherewith to hold the fabric, said means being pivoted on an axis,co-incident with the axis of said needle lever.

30. A sewing machine including in combination, a looper, a spreader, arotating member, a crank pin carried by said rotating member, and meansfor operating said looper and spreader, from said common crank pin, saidlooper and said spreader being positioned in different radial directionsrelative to the axis of said rotating member whereby one of saidimplements operates in advance of the other.

31. In a sewing machine, a main shaft, a vertical shaft, a looper, aspreader, means for operating said spreader and looper from saidvertical shaft, bearings for said looper and spreader, said bearingsbeing inclined to the vertical, whereby said looper and spreader intheir oscillation are given up and down movements.

32. The combination of an operating shaft, and needle, means foroperating the same, a looper, a spreader devices for independentlysupporting said looper and said spreader, an operating parteccentrically located on said shaft, means intermediate said eccentricpart and said looper and independent means intermediate said eccentricpart and said spreader for operating said looper and spreader.

In testimony whereof I ailix my signature, in presence of two witnesses.

LANSING ONDERDONK.

Witnesses:

R. S. OSWALD, WALTER HARTLEY.

